Human action recognition by learning bases of action attributes and parts

In this work, we propose to use attributes and parts for recognizing human actions in still images. We define action attributes as the verbs that describe the properties of human actions, while the parts of actions are objects and poselets that are closely related to the actions. We jointly model the attributes and parts by learning a set of sparse bases that are shown to carry much semantic meaning. Then, the attributes and parts of an action image can be reconstructed from sparse coefficients with respect to the learned bases. This dual sparsity provides theoretical guarantee of our bases learning and feature reconstruction approach. On the PASCAL action dataset and a new “Stanford 40 Actions” dataset, we…

• NS
  National Science Foundation

  Awards: 0845230, CAREER
• DA
  Defense Advanced Research Projects Agency
• MU
  Multidisciplinary University Research Initiative
• OO
  Office of Naval Research
• AR
  Army Research Office

  Awards: W911NF-10-1-0037, DARPA, W911NF, 911NF